Apex domains cannot have CNAME records.
Question and response
Question
dig kunleisys.com. NS
Answer
kunleisys.com. 5 NS ns1.design69.net.
kunleisys.com. 5 NS ns2.design69.net.
Authority
The response has no authority records.
Additional
ns1.design69.net. 5 A 178.63.132.70
ns2.design69.net. 5 A 178.63.198.198
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0